The Mobile Warming Bluetooth enabled 7.4volt High-Viz Heated Jacket is a real work jacket that meets ANSI standards. High-Viz is suited for the worker or anyone who works outside or in cold work environments that require a High visual jacket. The High-Viz is constructed of heavy-duty 100% Oxford Polyester Outer Shell that complies to ANSI/ISEA 107-2015 regulations. Powered by a rechargeable 7.4volt lithium-ion battery, the High-Viz heat zones keep you warm for hours. The High-Viz provides hard-working heat for serious cold.